SEISMIC RETROFIT DESIGN OF TEMPOZAN CABLE-STAYED BRIDGE

This paper describes the seismic retrofit for Tempozan Bridge on Hanshin Expressway. Tempozan Bridge is continuous three-span of 640m (120+350+170m) cable-stayed bridge. For evaluating the seismic performance of this bridge, huge possible earthquakes at the bridge site are considered as input motions of 3-D dynamic analysis. As the result of the analysis, the scenario of seismic damage and policy of retrofits are determined. It is evaluated that adopting the shear panel dampers at diagonal braces of the towers, is particularly effective for absorbing the seismic energy. The seismic performance of shear damper is verified experimentally.